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Finding the Fourth Proportional to 78,893.43, 118,322.46 and 22,721.01

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Solution

The fourth proportional to 78,893.43, 118,322.46 and 22,721.01 is: 34,076.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,893.43 : 118,322.46 = 22,721.01 : x
  2. Step 2: Convert to fraction form
    78,893.43/118,322.46 = 22,721.01/x
  3. Step 3: Cross multiply
    78,893.43x = 118,322.46 × 22,721.01
  4. Step 4: Simplify right side
    78,893.43x = 2,688,405,796.88
  5. Step 5: Solve for x
    x = 2,688,405,796.88/78,893.43
  6. Step 6: Final answer
    x = 34,076.42

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.